PINPOINT TEST B : The Power Liftgate Is Inoperative from An Individual Switch: Notes
Refer to Power Liftgate for schematic and connector information.
Normal Operations and Fault Conditions
The LTM receives inputs from the instrument panel and rear power liftgate open/close switches. The LTM sends a voltage signal to the switches on the input circuits. When either switch is pressed, the corresponding voltage signal is connected to ground signaling the LTM to open or close the liftgate. Both switches are connected to ground.
The LTM also receives a signal from the BCM (without Intelligent Access (IA)) or RFA module (With Intelligent Access) when the exterior liftgate release switch or a RKE transmitter button is pressed and conditions allow the liftgate to open. For vehicles without Intelligent Access (IA), the BCM sends the LTM a voltage signal on a liftgate open/close request circuit. For vehicles without Intelligent Access (IA), the RFA module sends the open/close request to the LTM over the MS-CAN.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1105 | Rear Open/Close Switch Active During Self Test | A continuous memory and on-demand DTC that sets when the LTM detects that the power liftgate rear control switch input circuit is shorted to ground for more than 1 second. |
| B2703 | Open/Close Switch Stuck Active | A continuous memory and on-demand DTC that sets when the LTM detects that the power liftgate control switch (instrument panel) input circuit is shorted to ground for more than 5 minutes. |
Visual Inspection and Diagnostic Pre-checks
- Power liftgate switch - instrument panel
- Power liftgate switch - rear
- Power liftgate switch - exterior